Number Base Converter
Convert between binary, ternary, octal, decimal and hexadecimal number bases, and learn the conversion principles.
Play a little. Discover a lot!
What are number bases?
Number bases are different ways to represent numbers. We use decimal (base 10) in daily life, but computers use binary (base 2). Different bases have different uses in science and engineering.
Historically Used Number Systems
Binary (Base 2)
Uses only 0 and 1, fundamental to computers
101 = 5 in decimal
Ternary (Base 3)
Uses 0-2, studied in early computing theory
12 = 5 in decimal
Octal (Base 8)
Uses 0-7, common in early computer systems
5 = 5 in decimal
Decimal (Base 10)
The number system we use daily
5 = 5 in decimal
Hexadecimal (Base 16)
Uses 0-9 and A-F, common in programming
5 = 5 in decimal